Plug



FIG. 1 is a front bottom perspective view of a plug;

FIG. 2 is a back top perspective view of the plug;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top plan view thereof. 

We claim the ornamental design for a plug, as shown and described. 